Power series solutions to Volterra integral equations

摘要

Power series type solutions are given for a wide class of linear and q-dimensional nonlinear Volterra equations on Rp. The basic assumption on the kernel K(x, y) is that K(x, xt) has a power series in x. For example, this holds for any analytic kernel.The kernel may be strongly singular, provided certain constants are finite. One and only one such power series solution exists. Its coefficients are given by a simple iterative formula. In many cases this may be solved explicitly. In particular an explicit formula for the resolvent is given.